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Daikin RXYQ72 Serivce Manual
R-410a heat pump 60hz
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
Introduction
Safety Cautions
Caution in Repair
Cautions Regarding Products after Repair
Inspection after Repair
Using Icons
Using Icons List
Preface
Part 1 General Information
Model Names of Indoor/Outdoor Units
External Appearance
Indoor Units
Outdoor Units
Model Selection
Part 2 Specifications
Specifications
Outdoor Units
Indoor Units
Ceiling Suspended Type
Wall Mounted Type
Floor Standing Type
Part 3 Refrigerant Circuit
Refrigerant Circuit
Rxyq72M, 96M
Refrigerant Circuit Part
Functional Parts Layout
Rxyq72M, 96M
Refrigerant Flow for each Operation Mode
Heating Operation
Part 4 Function
Operation Mode
Basic Control
Normal Operation
Compressor PI Control
Electronic Expansion Valve PI Control
Cooling Operation Fan Control
Special Control
Startup Control
Oil Return Operation
Defrosting Operation
Pump-Down Residual Operation
Restart Standby
Stopping Operation
Pressure Equalization Prior to Startup
Protection Control
High Pressure Protection Control
Low Pressure Protection Control
Discharge Pipe Protection Control
Inverter Protection Control
STD Compressor Overload Protection
Other Control
Outdoor Unit Rotation
Emergency Operation
Demand Operation
Heating Operation Prohibition
Outline of Control (Indoor Unit)
Drain Pump Control
Thermostat Sensor in Remote Controller
Freeze Prevention
Part 5 Test Operation
Test Operation
Procedure and Outline
Check Operation
Operation When Power Is Turned on
Outdoor Unit PC Board Layout
Field Setting
Field Setting from Remote Controller
Simplified Remote Controller
Detailed Explanation of Setting Modes
Contents of Control Modes
Field Setting from Outdoor Unit
Setting of Demand Operation
Test Operation
Image of Operation in the Case of a
Image of Operation in the Case of B
Additional Refrigerant Charge Total Flow
Part 6 Troubleshooting
CJ" Indoor Unit: Malfunction of Thermostat Sensor in Remote Controller
Troubleshooting by Remote Controller
The INSPECTION / TEST Button
Self-Diagnosis by Wired Remote Controller
Self-Diagnosis by Wireless Remote Controller
Operation of the Remote Controller's Inspection / Test Operation Button
Remote Controller Service Mode
Remote Controller Self-Diagnosis Function
Malfunction Code Indication by Outdoor Unit Pcb
Troubleshooting by Indication on the Remote Controller
A0" Indoor Unit: Error of External Protection Device
A1" Indoor Unit: PC Board Defect
PC Board Defect
A3" Indoor Unit: Malfunction of Drain Level Control System (S1L)
Troubleshooting
A6" Indoor Unit: Fan Motor (M1F) Lock, Overload
Malfunction of Swing Flap Motor (MA)
A7" Indoor Unit: Malfunction of Swing Flap Motor (MA)
A9" Indoor Unit: Malfunction of Moving Part of
Electronic Expansion Valve (20E)
AF" Indoor Unit: Drain Level above Limit
AJ" Indoor Unit: Malfunction of Capacity Determination Device
C4" Indoor Unit: Malfunction of Thermistor (R2T) for Heat Exchanger
C5" Indoor Unit: Malfunction of Thermistor (R3T) for Gas Pipes
C9" Indoor Unit: Malfunction of Thermistor (R1T) for Suction Air
CJ" Indoor Unit: Malfunction of Thermostat Sensor in
In Remote Controller
Remote Controller
E1" Outdoor Unit: PC Board Defect
Actuation of High Pressure Switch
E3" Outdoor Unit: Actuation of High Pressure Switch
Actuation of Low Pressure Sensor
E4" Outdoor Unit: Actuation of Low Pressure Sensor
Compressor Motor Lock
E5" Compressor Motor Lock
Compressor Motor Overcurrent/Lock
E6" Compressor Motor Overcurrent/Lock
Malfunction of Outdoor Unit Fan Motor
E7" Malfunction of Outdoor Unit Fan Motor
E9" Outdoor Unit: Malfunction of Moving Part of
Of Electronic Expansion Valve (Y1E, Y2E)
Electronic Expansion Valve (Y1E, Y2E)
F3" Outdoor Unit: Abnormal Discharge Pipe Temperature
Abnormal Discharge Pipe Temperature
Refrigerant Overcharged
F6" Refrigerant Overcharged
H7" Abnormal Outdoor Fan Motor Signal
2.23 "H9" Outdoor Unit
H9" Outdoor Unit: Malfunction of Thermistor (R1T) for Outdoor Air
J2" Current Sensor Malfunction
2.25 "J3" Outdoor Unit
J3" Outdoor Unit: Malfunction of Discharge Pipe Thermistor (R31~33T)
2.26 "J5" Outdoor Unit
J5" Outdoor Unit: Malfunction of Thermistor (R2T) for Suction Pipe
Malfunction of Thermistor (R2T) for
J6" Outdoor Unit: Malfunction of Thermistor (R4T) for
J7" Malfunction of Receiver Outlet Liquid Pipe
Thermistor (R6T)
J8"Malfunction of Oil Equalizing Pipe Thermistor (R7T)
Malfunction of Sub-Cooling Gas Pipe Thermistor (R5T)
J9" Malfunction of Sub-Cooling Gas Pipe Thermistor (R5T)
2.31 "JA" Outdoor Unit
Malfunction of Discharge Pipe Pressure Sensor
JA" Outdoor Unit: Malfunction of Discharge Pipe Pressure Sensor
JC" Outdoor Unit: Malfunction of Suction Pipe Pressure Sensor
Malfunction of Suction Pipe Pressure Sensor
2.33 "L4" Outdoor Unit
L4" Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise
L5" Outdoor Unit: Inverter Compressor Abnormal
Inverter Compressor Abnormal
L8" Outdoor Unit: Inverter Current Abnormal
L9" Outdoor Unit: Inverter Start up Error
Inverter Start up Error
2.37 "LC" Outdoor Unit
LC" Outdoor Unit: Malfunction of Transmission between Inverter and Control PC Board
P1" Outdoor Unit: Inverter Over-Ripple Protection
Inverter Over-Ripple Protection
2.39 "P4" Outdoor Unit
P4" Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise Sensor
PC Board or Faulty Combination of PC Board
PJ" Outdoor Unit: Faulty Field Setting after Replacing Main PC Board or Faulty Combination of PC Board
2.41 "UO" Outdoor Unit
UO" Outdoor Unit: Low Pressure Drop Due to Refrigerant Shortage or Electronic Expansion Valve Failure
U1" Outdoor Unit: Reverse Phase, Open Phase
Reverse Phase, Open Phase
2.43 "U2" Outdoor Unit
Or Instantaneous Failure
U2" Outdoor Unit: Power Supply Insufficient or Instantaneous Failure
U3" Outdoor Unit: Check Operation Not Executed
Check Operation Not Executed
U4" Malfunction of Transmission between Indoor Units
And Outdoor Units
U5" Indoor Unit: Malfunction of Transmission between
Remote Controller and Indoor Unit
Between Outdoor Units
U7" Indoor Unit: Malfunction of Transmission
U7" Indoor Unit: Malfunction of Transmission between Outdoor Units
2.48 "U8" Indoor Unit
Malfunction of Transmission between Main and Sub Remote Controllers
U8" Indoor Unit: Malfunction of Transmission between Main and Sub Remote Controllers
U9" Indoor Unit: Malfunction of Transmission between Indoor Units and Outdoor Units in the same System
UA" Improper Combination of Indoor Units
UA" Improper Combination of Indoor Units and
And Outdoor Units/Indoor Units and Remote Controller
Outdoor Units/Indoor Units and Remote Controller
UC" Address Duplication of Central Remote Controller
UE" Malfunction of Transmission between Centralized Controller and Indoor Unit
UF" System Is Not Set yet
UH" Malfunction of System, Refrigerant System Address Undefined
Troubleshooting (OP: Central Remote Controller)
PC Board Defect
M1" PC Board Defect
M8" Malfunction of Transmission between Optional Controllers for Centralized Control
Improper Combination of Optional Controllerslers for Centralized Controllers
MA" Improper Combination of Optional Controllers for Centralized Control
MC" Address Duplication, Improper Setting
Troubleshooting (OP: Schedule Timer)
UE" Malfunction of Transmission between Central Remote Controller
UE" Malfunction of Transmission between Central Remote Controller and Indoor Unit
PC Board Defect
M1" PC Board Defect
M8" Malfunction of Transmission between Optional Controllers for Centralized Control
Improper Combination of Optional Controllerslers for Centralized Controllers
MA" Improper Combination of Optional Controllers for Centralized Control
MC" Address Duplication, Improper Setting
Troubleshooting (OP: Unified ON/OFF Controller)
Operation Lamp Blinks
Display "Under Centralized Control" Blinks (Repeats Single Blink)
Display "Under Centralized Control" Blinks (Repeats Double Blink)
Part 7 Replacement Procedure for INV Compressor, VRV
Replacement Procedure for INV Compressor, VRV (RXYQ72M, 96M)
Replacement Procedure
Part 8 Appendix
Piping Diagrams
Outdoor Unit
Indoor Unit
Wiring Diagrams for Reference
Outdoor Unit
Field Wiring
Indoor Unit
List of Electrical and Functional Parts
Outdoor Unit
Indoor Side
Option List
Option List of Controllers
Option Lists (Outdoor Unit)
Example of Connection
Thermistor Resistance / Temperature Characteristics
Discharge Pipe
Pressure Sensor
Method of Replacing the Inverter's Power Transistors and Diode Modules
Part 9 Precautions for New Refrigerant (R-410A)
Precautions for New Refrigerant (R-410A)
Outline
Service Tools
Index
Malfunction of Capacity Determination Device
Malfunction of Thermistor (R2T) for Heat Exchanger
Drawings & Flow Charts
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Quick Links
1
Model Names of Indoor/Outdoor Units
2
Outdoor Units
Download this manual
SiUS39 - 601
RXYQ72, 96, 144, 168, 192MTJU
R-410A Heat Pump 60Hz
RXYQ72MTJU RXYQ96MTJU
RXYQ144MTJU
RXYQ168MTJU
RXYQ192MTJU
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Table of Contents
Troubleshooting
Part 6 Troubleshooting
116
Troubleshooting by Remote Controller
119
Troubleshooting by Indication on the Remote Controller
131
troubleshooting
134
Troubleshooting (OP: Central Remote Controller)
205
Troubleshooting (OP: Schedule Timer)
211
Troubleshooting (OP: Unified ON/OFF Controller)
219
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This manual is also suitable for:
Rxyq144
Rxyq168
Rxyq96
Rxyq192mtju
Rxyq72mtju
Rxyq96mtju
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Rxyq144mtju
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Fxsq18mvju
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Fxhq12mvju
Fxhq24mvju
Fxhq36mvju
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Fxaq24mvju
Fxlq12mvju
Fxlq18mvju
Fxlq24mvju
Fxnq12mvju
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Fxnq24mvju
Bsvq36mvju
Bsvq60mvju
Fxdq07mvju
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